Machine for removing surplus stock from shoes



Aug. 14,1928. 1,680,494

H. A. BALLARD MACHINE FOR REMOVING SURPLU STOCK FROM SHOES Figed Aug. 4, 1925 4 Sheets-Sheet 1 Aug. 14, 1928.

. H ALBALLARD MACHINE FOR- REMOVING SURPLUS STOCK FROM SHOES Filed Aug. 4, 1925 4 'Shee ts-Sheet 2 jventar Aug. 14, 1928. 1,680,494

H. A. BALLARD MACHINE FOR REMOVING SURPLUS STOCK FROM SHOES Filed Aug. 4, 1925 4 Sheets-Sheet 3 H. A. BALLARD IACHINE FOR REMOVING SURPLUS STOCK FROM SHOES.

Aug. 14, 1928. I

2 Sheets-Sheet 4 Patented Aug. 14, 1928.

UNITED STATES PATENT OFFICE.

BARBIE A. BALLARD, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MA- CHINERY- CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

MACHINE FOR REMOVING SURPLUS STOCK FROM SHOES.

Application filed August 4, 1923. Serial No. 655,699.

The present invention relates to machines for removing surplus stock from shoes and is herein shown as embodied in a machine adapted to be used in the manufacture of welt shoes to trim the projecting edges of the upper, lining and welt after the inseam has been sewed.

An object of the invention is to provide in a machine of this kind a simple and efficient construction and arrangement of parts for trimming off the surplus material and disposing of this material so as to avoid clogging the machine during the operation on a single shoe or upon successive shoes. A further object of the invention is to combine with this simple and'efficient construction and arrangement of parts a simplified and improved means for feeding and guiding the shoe.

\Vith these and other objects in view as will appear from the following description the invention consists in the novel constructions, combinations and arrangements of parts hereinafter described and claimed.

An important feature of the invention consists in a novel arrangement of a trimming cutter and a tube so located and arranged with relation to the cutter that the tube receives andconveys away the surplus material or chips removed from the stock by the cutter. The novel arrangement is so effective in removing the surplus material from the'machine that it has been found unnecessary to use any means for creating a suction, although such means may readily be connected with the tube if desired.

Another important feature of the present invention consists in arranging the tube above referred to so that it not only receives the surplus material trimmed from the work by the cutter but also feeds or tends to feed the work to the cutter. In the inseam trimming machine herein shown as embodying the invention the tube is arranged to feed the shoe and receive the surplus material trimmed from the edges of the upper, lining and welt of the shoe. As shown the tube is provided at one end with a peripheral feeding surface arranged to act on the flesh side of the welt of a shoe to be trimmed. The edge of the tube is thus in a position to cooperate with a trimming cutter located at the mouth of the tube and the tube can receive directly the. trimmed material and convey it away from the trimming knife and other operating parts of the machine. The trimming cutter as shown is tubular or cupshaped in form and is so arranged that it extends within the mouth of the tube with its cutting edge operatingacross the edge of the tube. The cutter rotates about an axis extending substantially in the direction of feed and, in order to give clearance for the shaft upon which the knife is mounted and also to afford room in which to manipulate the shoe during the trimming operation, the axis of the knife is inclined somewhat both to the axis of the tube and to the plane of cut. The arrangement of the axis of the knife at an inclination to the axis of the tube also gives an effective shearing cut, since the cutting edge of the knife at the point at which it sweeps across the edge of the tube forms with the edge of the tube an acute angled throat into which the material to be trimmed is fed.

The surplus material, or chips, trimmed from the inseam are thrown from the knife into the tube and are conveyed away by the tube and discharged from the machine. The passage of the trimmings or chips through the tube is facilitated and assisted by the rotation of the tube and in order to increase the tendency of the trimmings to travel along the tube its inner surface is tapered outwardly towards its discharge end.

In the machine illustrated in the drawings a frusto-conical wheel or disk is provided to bear against the grain side of the welt and cooperate with the feeding surface of the tube in feeding and guidingthe work. Also a sole rest or foot is provided to bear against the insole a short distance inside of the inseam.

To enable the trimming cutter to be sharpened by the operator a grinding disk is provided which is supported in a simple and novel manner so that it can readily be moved by the operator into and out of contact with the knife. Also to adapt the machine for satisfactory operation on certain kinds of stock such, for instance, as box toes or linings impregnated with resin, asphalt or other stiffening material means are provided for supplying suitable lubricating fluid, as machine oil, to the cutting edge of the knife. This oil prevents adherenceto the knife of the stiffening material and also lubricates the contacting surfaces of the knife and tube. The requisite amount of oil is conveniently supplied through the center of the cutter and is distributed over the cutting edge by centrifugal action. From the cutting edge of the knife :1 sufiicient amount of oil is conveyed to the cooperating edge of the tube to keep this cdge clean also.

The invention will be clearly understood from an inspection of the accompanying drawings in which Fig. 1 is a view in front elevation of an inseam trimming machine embodying the several features of the present invention; Fig. 2 is a detail sectional view taken on the line 2-2 of Fig. 5 illustrating the :uljustment for the bracket in which the trimming cutter is mounted; Fig. 3 is a view in left hand elevation of the machine; Fig. :2 is a detail sectional view taken on the line t-t of Fig. 1 also illustrating the con struction for adjusting the bracket in which the trinnning knife is n'iounted; Fig. 5 is a plan view of the machine; Fig. 6 is a detail horiontal sectional. view taken through the axis of the trimming cutter; Fig. 7 is a detail horiontal sectional view on a plane passing through the axis of the feeding tube and illustrating the relative positions of the parts of the machine at the point of operationon the shoe; Fig. 8 is a vertical sectional view of the parts illustrated in Fig. 7; Fig. 9 is a view in front elevation of the parts shown in Figs. 7 and 8; and Fig. 10 is a detail sectional view on the line 1010 of Fig. 8.

The delivery tube is indicated at 1 and is arranged to rotate about a horizontal axis which extends substantially transverse to the direction in which a shoe is fed to the machine. At. its front open end the tube is provided with a peripheral feeding surface 2 arranged to act on the flesh side of the welt of a shoe as indicated in Fig. 8. At its rear end the tube is screw threaded into a cvlinder 3 which forms a continuation of the tube and which is mounted to rotate in a bearing in the frame 4 of the machine. The tube 1 is also supported by a bearing surface formed on a ring 5 partially surrounding the tube and held in the machine frame by screws 6. The forward end or mouth of the tube 1 is provided with an edge 7 to cooperate with the edge of the trimming cutter hereinafter described and the inner surface of the tube at its mouth is concaved, as indicated at 8, to provide a surface over which the trimming cutter can sweep. The tube is rotated from a power driven shaft 5) through intermeshing bevel gears 10 and 11 mounted respectively on the power driven shaft and on the cylinder 3. The bevel gear 11 is in the form of a ring surrounding the cylinder 3 and is secured thereto by screws 12 passing through the hub of the gear and engaging holes 13 in the cylinder.

To permit a longitudinal adjustment of the cylinder 3 and of the tube 1 so as to bring the forward edge of the tube into the desired position transversely of the direction of feed a series of holes 13 are formed in the cylinder 3, as indicated in Figs. 5, 7, 8 and 10, which are located at different distances from the end of the tube. The gear 11 is held from longitudinal movement between bearing surfaces on the frame of the machine so that the position of the tube is determined by those holes in the cylinder 3 which are engaged by the screws 12.

The trimming cutter 1:20 illustrated in the drawings is frusto-conical or cup-shaped in form and is secured upon the end of a shaft 14 journaled in a bracket. 15 secured to the machine frame. The cutter is arranged so that its cutting edge operates across the edge of the tube 1 at its lowest point. The cutter extends within the tube and its external surface makes close contact with the concave surface 8 at the mouth of the tube. As indicated in Figs. 5 and 7, the cutting edge of the knife crosses the edge of the tube at an acute angle and forms with the edge of the tube a throat into which. the inseam material is fed. The cutter and tube thus cooperate to sever the inseam with an effective shearing cut. To enable the cutter to extend well within the mouth of: the tube, as indicated in Figs. 7 and 8, in which substantially half of the cutting edge of the knife is enclosed by the tube, and to cause the edge of the knife to cross the edge of the tube at an acute angle, as above described, the axis of the knife is arranged at an angle to the axis of the tube. The frusto-conical shape of the cutter permits it to be received within the mouth of the tube, but in order to give somewhat. more clearance and also to give room for the manipulation of a shoe, the axis of the cutter is also arranged somewhat. inclined to the plane of cut. The arrangement of the axis of the knife at an inclination to the axis of the tube also facilitates the discharge of the trimmed material from the knife backwardly into the tube through which it passes to the discharge end of the tube. The rotation ofthc tube prevents the trimmed material from sticking or becoming clogged in the tube. Also the passage of the trimmed material through the tube is facilitated by the fact. that the inner surface of the portion of the tube formed my the cylinder 3 tapers outwardly away from the trimming knife towards the discharge end of the tube so that this surface, as the tube rotates. feeds or tends to feed the trimmed material outwardly along the tube. A suitable suction apparatus may be connected with the discharge end of the tube if desired, but in the actual use of the machine a suction has been found to be unnecessary.

To enable the trimming cutter to be adjusted to compensate for the Wearing away of its edge in grinding, the bracket 15, in which the shaft 14 of the cutter is journaled, is mounted to slide onan inclined guideway on the frame of the machine, as

indicated in Figs. 1, 2 and 4, and is secured to the frame by screws 16 passing through slots in the bracket. A screw 17 mounted in the machine frame and engaglng the bracket serves as a means of adjustment after the screws 16 are loosened. The trim-v ming cutter is rotated by a belt passing over of the cutter by centrifugal action and from the cutter over the cooperating edge and surfaceof the tube 1.

The welt of a shoe during the passage of the shoe through the machine is supported in contact withthe peripheral feeding surface of the tube l'by means of a frustoconical roll 22 arrangedwith its edge entering the crease between the upper and the welt and with its conical surface in contact with the grain side of the welt. The roll 22 is mounted upon a support 23 secured to and forming the forward end of a'lever 24, the

rear end of which is acted upon by a spring 25 which forces the roll against the grain surface of the welt. To provide a firm bearing for the roll 22 which will permit free rotation of the roll while preventing any angular displacement of its work contacting surface with relation to the feeding surface of the tube 1, the support 23 isprovided. with a recess from the center of which a bearing stud 26 projects, and a series'of bearing balls are located near the periphery of the roll between the lower surface of the roll and the upper surface of thesupport. The lever 24 is connected by means of a rod 27 to a foot treadle, not shown,by means of which the roll 22 may be lowered to facilitate the insertion of a shoe in the machine. To assist the operator in guiding a shoe throughthe. machine asole rest is provided consisting of a roll28 arranged tobear upon the sole surface inside of the inseam, as best shown in Fig. 8. This roll is journaled in the lower end of a rod 29 which is secured by screws 30 so as to be capable of vertical adjustment in a bracket '31.

The grinding disk is indicated at 32. This disk is secured to a shaft 33 mounted in a radius arm 34 and driven by a belt passing over belt pulleys 35 and 36 secured re spectively to the shaft 33 and to a shaft 37 which forms a. pivotal support for the radius arm 34. The shaft 37 is driven by a ,belt passing over a pulley 38 secured to the shaft. At its forward endthe radius arm 34 is provided with a lug 39 which is engaged by an adjusting rod 40 the lower end of which has a screw threaded engagement with a block 41 pivotally mounted on a bracket 42' secured to the frame of the machine. The radius arm 34 and the grinding disk carried there-by are thus supported by the pivot block 41 and adjusting rod 40 so that the grinding disk can be readily moved into and out of contact with the trimming cutter by turning the adjusting rod.

The operation of the illustrated machine has been indicated in connection withthe description of its various parts and will be readily understood without a separate description thereof. The nature and scope of the present invention having been indicated and the illustrated embodiment of the invention having been specifically described, what is claimed 1s:

1. In a machine for removing surplus material from shoes, a rotary delivery tube,

and a cutter operating at the mouth of the tube and arranged to throw into the tube the material removed from the shoe.

2. In a machine for removing surplus stock from shoes, a rotary cutter and a 1'0- tary tube located adjacent to the cutter and ill) with its axis extending approximately in the 7 direction .in which the cutter tends to throw the material removed from the shoe.

3. In a machine for removing surplus stock from shoes, a rotary cutter, and a rotary tube presenting a cooperating edge and located toreceive the material removed from the stock by the cutter.

4. In a machine for removing surplus stock from shoes, a cutter mounted to rotate on an axis extending approximately in the direction of feed of the work, and a tube partially surrounding said cutter which presents a cooperating edge and receives the chips removed from the work by the cutter.

5. In a machine for removing surplus stock from shoes, a rotary delivery tube, and a trimming cutter operating across the edge of'the tube.

6. In a machine for removing surplus material from shoes,a tube arranged to engage and feed the work, and a cutter operating atthe mouth of the tube and arranged to throw into the tube the material removed from the shoe. v

7. In an inseam trimming machine a cutter constructed and arranged to cut outwardly across the inseam, and a tube located with its axis approximately parallel with the path of the cutter across the inseam, the arrangement being such that the cutter operates at the mouth of the tube and throws into the tube the surplus material removed from the shoe.

8. In an inseam trimming machine atrimming cutter, and a rotary delivery tube extending transversely to the direction in which the shoe is fed to the cutter.

9; In an inseam trimming machine a delivery tube, and a tubular trimming cutter operating across the edge of the tube and rotating about an axis extending substantially in the direction of feed.

10. In an inseam trimming machine a trimming cutter, and a rotary delivery tubeextending transversely to the direction of feed and having an internal surface tapering outwardly away from the cutter.

11. In an inseam trimming machine feeding devices including a tube provided at one end with a peripheral feeding surface ar ranged to act on the flesh side of the welt of a shoe, and a trimming cutter to sever the inseam material at the mouth of the tube.

12. In an inseam trimming machine feeding devices including a tube provided at one end with a peripheral feeding surface arranged to act on the flesh side of the welt of a shoe, a cooperating wheel arranged to act on the grain side of the welt, and a trimming cutter to sever the inseam material at the mouth of the tube.

13. In an inseam trimming machine feeding devices including a tube provided at one end with a peripheral feeding surface arranged to acton the flesh. side of the welt of a shoe, and a trimming cutter operating across the edge of the tube and rotating about an axis extending substantially in the direction of feed.

14. In an inseam trimming machine feeding devices including atube provided at one end with a peripheral feeding surface arranged to act on the flesh side of the welt of a shoe, and a tubular trimming cutter operating across the edge of the tube.

15. In an inseam trimming machine feeding devices including a tube provided at one end with a. peripheral feeding surface arranged to act on the flesh side of the welt of a shoe, and a tubular trimming cutter operating across the edge of the tube and having its axis inclined to the plane of cut.

16. In an inseam trimming machine feeding devices including a tube providedat one end with a peripheral feeding surface arranged to act on the flesh side of the welt of a shoe, and a tubular trimming cutter operating across the edge of the tube and having its axis inclined both to the plane of cut and to the axis of the tube.

17. The combination with a cutter of' a grinding wheel, a pivotally mounted arm on the free end of which the wheel is mounted, pulleys concentric with the wheel and the pivot of the arm, a driving belt passing over the pulleys, an actuating rod mounted in the arm for moving the wheel into and out of engagement with the cutter, and a. pivotally mounted block having a screw threaded engagement with the rod.

18.111 an inseam trimming machine a delivery tube extending transversely to the direction in which the shoe is fed, and a tubular trimming cutter operating across the edge of the tube and rotating about an axis inclined to the axis of the tube.

19'. In a machine for removing surplus material from shoes a rotary tubular trimming cutter, and a member provided with a cooperating edge across which the trimming cutter operates and with a surface back of said edge coneaved to substantially lit the cutter.

20. In a machine for removing surplus material from shoes a rotary tubular trinmnng' cutter. and a rotary tube provided at one end with an edge across which the cutter operates and with an internal surface hack of said cdgcconca'ved to substantially lit the cutter.

21. In a machine for removing surplus material from shoes a rotary tubular trimming cutter, a member provided with a cooperating edge across winch the trimming cutter operates and with a surface back of said edge concaved to substantially fit the cutter, and means for supplying oil to said cutter and surface.

22. In amachine for removing surplus material fromshoes a rotary tubular trimming cutter, a member provided with a cooperating edge across which the trimming cutteroperates, and means for supplying oil through the center of the cutter to be distributed over the cutting edge by centrifugal action.

23. In a machine for removing surplus material from shoes a rotary tubular trimming cutteiga memhcr-provided with a cooperating edge across which the trimming cutter operates, and a shaft on which the cutter is mounted provided with a central bore through which oil may be supplied to the cutter to be distributed over the cutting edge by. centrifugal action.

24. In a'machine'for usein themanufacture' of'sho'es,.a roll: provided with a. frustoconical; work engaging surface, a roll support provided with. a bearing stud for the roll, and a ball?bearingbetween the roll and support concentric with the stud and adja centz'the periphery of the roll.

HARRIE A. BALIJARD. 

